Serous pericardium

What is Serous pericardium?

It is the name given to a layer of the serous membrane known as the Pericardium. It is one of the membranes which surround the heart. This singular cell layer can be found lying atop a subserosal connective tissue layer. It is also known by various other names, such as:

Serous portion of pericardium

Péricarde séreux (French)

Pericardium serosum (Latin)

Serous pericardium - Appearance

The membrane is transparent and sac like in appearance.

Serous pericardium - Anatomy

This pericardial structure is constituted by the following two layers:

Parietal layer

It acts as a lining for the inner slope of the fibrous pericardium.

Visceral layer

It is attached to the surface of the cardiac region.

Serous pericardium - Functions

It surrounds the heart and acts like a protective case for the organ. A thin film of serous fluid in this membrane lets the heart move easily and gives it a frictionless environment that allows it to expand and contract.

Serous pericardium - Pictures

The following images demonstrate the physical appearance of this layer.